package com.example.controller;

import com.auth0.jwt.exceptions.AlgorithmMismatchException;
import com.auth0.jwt.exceptions.SignatureVerificationException;
import com.auth0.jwt.exceptions.TokenExpiredException;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.example.entity.User;
import com.example.service.UserService;
import com.example.utils.JWTUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

@RestController
@Slf4j
public class UserContorller {

    @Autowired
    private UserService userService;

    @GetMapping("/user/login")
    public Map<String,Object> login(User user){
        log.info("用户名：[{}]",user.getName());
        log.info("密码：[{}]",user.getPassword());
        Map<String,Object> map = new HashMap<>();
        try {
            User userDB = userService.login(user);
            Map<String, String> payload = new HashMap<>();
            payload.put("id",userDB.getId());
            payload.put("name",userDB.getName());
            // 生成jwt令牌
            String token = JWTUtils.getToken(payload);
            map.put("state",true);
            map.put("msg","认证成功！");
            map.put("token",token);  // 响应token
        } catch (Exception e) {
            map.put("state",false);
            map.put("msg",e.getMessage());
        }
        return map;
    }

    @PostMapping("/user/params/test")
    public Map<String,Object> test(String token){
        log.info("当前token为：[{}]",token);
        Map<String,Object> map = new HashMap<>();
        try {
            // 验证令牌
            DecodedJWT verify = JWTUtils.verify(token);
            map.put("state",true);
            map.put("msg","请求成功");
            return map;
        } catch (SignatureVerificationException e) {
            e.printStackTrace();
            map.put("msg","无效签名！");
        }catch (TokenExpiredException e){
            e.printStackTrace();
            map.put("msg","token过期");
        }catch (AlgorithmMismatchException e){
            e.printStackTrace();
            map.put("msg","算法不一致");
        }catch (Exception e){
            e.printStackTrace();
            map.put("msg","token无效！");
        }
        map.put("state",false);
        return map;
    }

    @PostMapping("/user/header/test")
    public Map<String, Object> test(HttpServletRequest request) {
        Map<String, Object> map = new HashMap<>();
        // 验证令牌  交给拦截器去做
        // 只需要在这里处理自己的业务逻辑
        String token = request.getHeader("token");
        DecodedJWT verify = JWTUtils.verify(token);
        log.info("用户id：[{}]", verify.getClaim("id").asString());
        log.info("用户名字：[{}]", verify.getClaim("name").asString());
        map.put("state", true);
        map.put("msg", "请求成功");
        return map;
    }
}